Management

We have tried 5 different scenarios:

  • RFMb: rotation forest management with thinning from below (Scenario 1)
  • RFMa: rotation forest management with thinning from above (Scenario 2)
  • CCF: Continious cover management (Scenario 3)
  • RFMa + CCF: one of these two appoaches (Scenario 4)
  • AAF: Any age forestry (Scenario 5)

We have optimized without and with net income contrains. The net income constrain was calculated per area as the mean net income for each discount rate across the 10 periods and the five scenarios.

Study areas

The study area is located in Liperi and it contains 12 different areas.

[I will add here some description of the different areas]

Results

Wood production

Figure 1: The mean total wood volume production across the 12 areas

Main points:

  • The mean total wood volume production across the 12 areas was higher when the management was continious cover forestry with rotation foresty with thinnings from above (scenario 4) and the lowest for the rotation forestry with thinning from below (scenario 1).
  • There was not significant differences between constrained and uncostrained optimization across the 12 area or scenarios.

Figure 2: Total wood production by area

Roundwood volume

Figure 3: Roundwood volume, the solid lines represent the mean values across the 12 study areas, and the shadowed areas represent the variation.

Main points:

  • Management with unconstrained and constrained net incomes show that the volume trends changes by management approach (scenario), and that the roundwood volumes were higher throughout the whole period when the management was continious cover forestry (Scenario 3), and lowest when the management was rotation forestry with thinning from below (Scenario 1).
  • Any aged forestry produced higher mean roundwood when the managements was constrained than when it was uncontrained.
  • There was higher differences in roundwood volumes between scenarios when the net income was unconstrained than when it was constrained.
  • The mean differences between the 5 management aproaches are more evident when the management is uncosntrained. It is hard to differenciate between the different scenario treatments as the variation is overlaping across the whole period, specially when the net income was constrained.

Figure 4: Trends of roundwood volume per area with unconstrained net income

Figure 5: Trends of roundwood volume per area with constrained net income

Carbon balance

Figure 6: Carbon balance, the solid lines represent the mean values across the 12 study areas, and the shadowed areas represent the variation.

Figure 7: Trends of carbon balance per area with unconstrained net income

Figure 8: Trends of carbon balance per area with constrained net income

Economic revenues

Figure 7: Net income, the solid lines represent the mean values across the 12 study areas, and the shadowed areas represent the variation.

Figure 8: Net income per area with unconstrained net income

Figure 9: Net income per area with constrained net income

Figure 10: The mean and variation NPV across the 12 areas